System & Developer Utilities

Handle frequent development tasks with focused utilities for network inspection, Git workflows, diagrams, and protocol references.

HTTP Header Parser

Parse raw HTTP request and response headers into structured data.

Query A, AAAA, MX, TXT, and CNAME records through DNS over HTTPS.

Explore status-code meanings and appropriate usage through an interactive reference.

Build common Git commands from clear, reviewable selections.

Create and preview Mermaid flowcharts, sequences, and architecture diagrams.

Convert sanitized cURL commands into JavaScript fetch() calls.